1. Department of Internal Medicine, Niigata University Faculty of Medicine, Niigata, Japan
2. Department of Food and Nutrition, Tokushima Bunri University Faculty of Human Life Science, Tokushima, Japan
3. Department of Nursing, Niigata College of Nursing, Joetsu, Japan
4. Department of Health and Nutrition, University of Niigata Prefecture Faculty of Human Life Studies, Niigata, Japan
5. Department of Pediatrics, Niigata University Faculty of Medicine, Niigata, Japan